Gasket



Oct. 12 1 26. 1,602,515

c. B. BAILEY GASKET Filed July 1 8. 1925 Patented Oct. 12, 1926.

UNITED STATES PATENT OFFICE.

CLAUDE B. BAIL EY, OI WYANDOTTE, MICHIGAN, ASSIGNOB TO MCCORD RADIATOR &MFG. (30., OF DETROIT, MICHIGAN, A CORPORATION OF MAINE.

- GASKET.

Application filed July 18, 1925. Serial No. 44,489.

The gasket contemplated by this invention has a plurality of s aced portholes 1n its body portion, with t e latter made entirel of sheet metal,preferably from a sin e layer of such material, and with fol ed pressurereceiving portions about the respective port holes and made of sheetmetal independentof the body layerand 1nserted in said port holes.

The main 0b ect of the invention is to have these pressure receivingportions in such folded form that they provide at least two folds orlayers on each side of the gasket bodyl about the port holes to producethe cus ions required without the use of asbestos or like material forrougher as well as the smoother surfaces between which the gaskets areclamped.

'The invention consists further in the matters hereinafter described andclaimed.

In the accompanying drawings Fig. 1 is a plan view of a cylinder headgasket constructed in accordance with m invention;

Figs. 2 and 3 are longitudinal and transverse sectional views,respectively, taken on lines 2-2 and 33 of Fig. 1; and

Fig. 4 is a vertical sectional view showing the gasket clamped betweenacylinder block and cylinder head.

As shown 1n the drawings, the gasket; has a flat body portion '1,stamped or otherwise formed from a single layer of sheet;

metal, such as copper, brass, aluminum, zinc, or other suitablematerial. Said gasket has a plurality of relatively large port holes oropenings 2, 2 disposed in a row lengthwise of the gasket body. Said portholes 2,2 are substantially the same in size clamped between such partsby the usual studs or bolts 7, 7, as in structures of this. kind, thegasket has holes 8, 8 at'its mar-' gins to receive these studs.

The gasket shown in the drawings 1s designed for a four-cylinder enginewith overhead valves, the latter being omitted for the sake ofillustration. Such engines are employed in Chevrolet cars, although itis of course to be understood that gaskets of my invention may bedesigned for the same number or more cylinder motors and have differentvalve arrangements without departing from the spirit and scope of myinvention. Around the port holes 2 and 6, I provide pressure receivingportions 9, 9 formed of sheet metal independent of the gasket body 1 andinserted in said port holes. These portions are in folded form and havea plurality of superimposed folds or layers a to e substantiallyparallel to each other and to the gasket body 1, as clearly shown inFig. 4. The layers a to c of each pressure receiving portion 9 arefolded into the form shown from a single piece of sheet metal, so thatsuch layers are integrally connected. The portions 9 are inserted intheir respective, port holes 2 and 6 with their layers a and b on oneside of the body layer 1 and their layers 0 to e on the opposite-side.These portions 9 are retained at their port holes b the body portion 1extending between t e layers 1) and 6 with the layers engaging the bod 1on opposite sides thereof, as shown in ig. 4. 1 The layers a and b areintegrally connected by the fold in the metal around the outer edge ofthe portion 9. Layers b andv c are integrally connected by thefoldedrtion which extends through the port li le in t e body layer 1 andalso across the folded metal connectin the layers (1 and 6 together, asshown in Fig. 4. The fold in the metal connecting the layers a and d isaround the outside of the portion 9 and is substantially in alignmentwith the folded connection between la ers a and b. The folded portion fis su stantially in alignment with the inner edge of the layer a, sothat the pressure receivin portion 9 is substantially uniform in -wi thfrom one side of the gasket body 1 to the other and thus distributesmore or less uniformly the clamping pressure on the gasket throughoutthis portion 9. To have this uniform width, the la ers d and e are atrifle narrower than the ot er layers, as shown.

. The portions 9, by reason of their folding, are thicker than thegasket body 1, and allow the clamping pressures when exerted on thegasket to be concentrated on and confined to these portions 9 to obtaintight joints immediately at and about the port holes withoutdistributing and wasting the pressure over the entire surface or area ofthe gasket, as with cylinder head gaskets as heretofore generallyconstructed. This allows less pressure to be used and thus enablessmaller studs or bolts to be employed, or the same size studs as nowgenerally employed may be used with less strain or tension on them toprovide tight joints, especially for high pressures as encountered incylinders of internal combust-ion engines.

With two or more folds or layers of sheet metal on opposite sides of thegasket body 1, sufficient cushions are provided for the gasket to maketight joints, without regard to the smoothness or finish of the surfacesbetween which the gaskets are clamped. Making the pressure receivingportions 9 L in the manner herein disclosed, tight joints can be madebetween very rough surfaces because there is sufficient metal providedin conjunction with the body layer 1 for the purpose. It is desired tohave the outermost layers on opposite sides of the body 1 slightlyspaced from their connecting layers so that the metal may be undertension and yield under clamping pressures to produce the tight jointsrequired.

The gaskets being made entirely of sheet metal avoids blow-outs for thereason that there are no separate parts to loosen or fracture under highpressure, as with gaskets made up of separate metal layers or facingsand interposed layers of asbestos or like material as heretofore.Moreover, with the pressure receiving portions entirely of sheet metal,asbestos and the like is dispensed with, thereby simplifying the gasketstructure by eliminating excess material and reducing the manufacturingcost.

My invention may be applied to gaskets of other types, and I do notdesire to be limited in its application to cylinder head gaskets asshown.

I claim as my invention 1. A gasket having a body portion of a singlelayer of sheet metal with a port hole therein, and a pressure receivingportion formed of sheet metal independent of the gasket body andinserted in said port hole, said member being folded to have a pluralityof superimposed folds or layers on opposite sides of the gasket bodywith the layers on one side having folded portions lying between thegasket body and the adj acent outer layer of said member.

2. A cylinder head gasket having a flat body portion of a single layerof sheet metal and having a plurality of port holes therein, andpressure receiving members formed of sheet metal independent of thegasket body and inserted in said port holes, said members being foldedto have a plurality of superimposed folds or layers on opposite sides ofthe gasket body with the layers on one side having folded portions lyingbetween the gasket body and the adjacent outer layers of the members.

3. A gasket having a flat body portion of a single layer of sheet metaland having a port hole therein, and a pressure receiving member formedof sheet metal independent of the gasket body and inserted in the porthole, said member being folded to have a greater number of folds orlayers on one side of the gasket body than on the other with anintermediate layer on one side of the gasket layer connected with anouter layer on the opposite side by a fold in the metal extendingthrough the port hole, the intermediate layers on the last mentionedside of the gasket body being narrower than the outermost layer andbeing integrally connected by the folds in the metal about the insideand outside edges, respectively, of said layers.

In testimony whereof, I aflix my signature this 10th day of July, 1925.

CLAUDE B. BAILEY.

